Commonly used lunch boxes are: glass silicon, plastic, iron three, plastic, then divided into PC material and PP material, so it can be said that four kinds. The glassy lunch box is the safest material in the material, but it is inconvenient to carry, it needs to be carefully guarded, and it is very heavy. Even if you don't have anything, the weight is already there. For plastics, it is recommended to buy PP5, pp material is international safety grade material, and pp5 is high temperature resistant to microwave oven, so it is recommended to buy pp5 lunch box, it is better to carry. Iron is easy to bring heat and will be hot.
The plastic lunch box is a plastic container made of food grade plastic raw materials for the convenience of us to take food. It is a household plastic product that is very common in our daily life and is an indispensable plastic container for picnics or hiking. Plastic lunch boxes are available in a variety of styles and sizes. A square plastic lunch box can be used to store a variety of ingredients. Rectangular plastic lunch boxes are easy to store moisturey foods such as fruits, vegetables and seafood. The round plastic lunch box is ideal for storing sauces, sauces and a variety of side dishes.
The development of lunch boxes is subject to many constraints and restrictions, especially disposable lunch boxes, which will disappear in the future. This involves global environmental issues, but it cannot be stopped at once. It needs to be based on actual conditions or a transition period. It is to popularize and improve the public's awareness of environmental protection, and must be aware of the dangers of disposable lunch.
Some metal and plastic lunch boxes will receive great attention, and the state will strongly support them. All of this will be based on protecting the environment and creating a good living environment. However, the key is to require the assistance of the citizens and the masses to be the most important.